Patents by Inventor Shingo Tode

Shingo Tode has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10511007
    Abstract: A nonaqueous electrolyte secondary battery including a positive electrode collector electrically connected to a positive electrode plate, a negative electrode collector electrically connected to a negative electrode plate. At least one of the collectors includes a first-side base portion disposed near the sealing plate, and a first-side lead portion connected to one end portion of the first-side base portion and extending towards an electrode body. The first-side lead portion includes a first-side power generating element joining portion joined to a lateral side of the electrode body, and a first-side inclined portion inclined with respect to a thickness direction of the electrode body from the first-side power generating element joining portion towards an outer side in the thickness direction. A total weight of the electrode body and nonaqueous electrolyte contained in the electrode body ranges from 200 g or more to 500 g or less.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: December 17, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masashi Muraoka, Tomoharu Arai, Tetsuya Okado, Shingo Tode, Toyoki Fujihara
  • Patent number: 10431827
    Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: October 1, 2019
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20180358623
    Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.
    Type: Application
    Filed: August 14, 2018
    Publication date: December 13, 2018
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Patent number: 10079386
    Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: September 18, 2018
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20180097219
    Abstract: A nonaqueous electrolyte secondary battery including a positive electrode collector electrically connected to a positive electrode plate, a negative electrode collector electrically connected to a negative electrode plate. At least one of the collectors includes a first-side base portion disposed near the sealing plate, and a first-side lead portion connected to one end portion of the first-side base portion and extending towards an electrode body. The first-side lead portion includes a first-side power generating element joining portion joined to a lateral side of the electrode body, and a first-side inclined portion inclined with respect to a thickness direction of the electrode body from the first-side power generating element joining portion towards an outer side in the thickness direction. A total weight of the electrode body and nonaqueous electrolyte contained in the electrode body ranges from 200 g or more to 500 g or less.
    Type: Application
    Filed: August 23, 2017
    Publication date: April 5, 2018
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Masashi Muraoka, Tomoharu Arai, Tetsuya Okado, Shingo Tode, Toyoki Fujihara
  • Patent number: 9577245
    Abstract: Disclosed is a non-aqueous electrolyte secondary cell excellent in capacity retention rate and I-V characteristics after repeated cycles. The secondary cell contains a negative electrode active material containing scaly graphite particles and coated graphite particles. The coated graphite particles contain graphite particles and a coating layer coating the surfaces of the graphite particles. The coating layer contains amorphous carbon particles and an amorphous carbon layer. It is preferable that the negative electrode active material contain 1 to 6% by mass of the scaly graphite particles and that the graphite particles, the amorphous carbon particles, and the amorphous carbon layer be in a mass ratio of 100:?:? where 1???10, 1???10, and ??1.34?.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: February 21, 2017
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Shinichi Yamami, Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20160276699
    Abstract: A prismatic nonaqueous electrolyte secondary battery includes a flat winding electrode assembly formed by winding an elongated positive and negative electrodes with an elongated separator interposed therebetween, and an outer body storing the flat winding electrode assembly and a nonaqueous electrolyte. The positive electrode includes a positive electrode substrate exposed portion formed along a longitudinal direction. The negative electrode includes a negative electrode substrate exposed portion formed along a longitudinal direction. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2) at the time of making the nonaqueous electrolyte secondary battery. The flat winding electrode assembly has eight or more layers of a winding portion formed only of the separator in its central portion.
    Type: Application
    Filed: August 8, 2013
    Publication date: September 22, 2016
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Patent number: 9450269
    Abstract: A prismatic nonaqueous electrolyte secondary battery includes a flat winding electrode assembly formed by winding an elongated positive and negative electrodes with an elongated separator interposed therebetween, and an outer body storing the flat winding electrode assembly and a nonaqueous electrolyte. The positive electrode includes a positive electrode substrate exposed portion formed along a longitudinal direction. The negative electrode includes a negative electrode substrate exposed portion formed along a longitudinal direction. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2) at the time of making the nonaqueous electrolyte secondary battery. The flat winding electrode assembly has eight or more layers of a winding portion formed only of the separator in its central portion.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: September 20, 2016
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20160133934
    Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.
    Type: Application
    Filed: June 10, 2014
    Publication date: May 12, 2016
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20150044533
    Abstract: A prismatic nonaqueous electrolyte secondary battery includes a flat winding electrode assembly formed by winding an elongated positive and negative electrodes with an elongated separator interposed therebetween, and an outer body storing the flat winding electrode assembly and a nonaqueous electrolyte. The positive electrode includes a positive electrode substrate exposed portion formed along a longitudinal direction. The negative electrode includes a negative electrode substrate exposed portion formed along a longitudinal direction. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2) at the time of making the nonaqueous electrolyte secondary battery. The flat winding electrode assembly has eight or more layers of a winding portion formed only of the separator in its central portion.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20140134492
    Abstract: Disclosed is a non-aqueous electrolyte secondary cell excellent in capacity retention rate and I-V characteristics after repeated cycles. The secondary cell contains a negative electrode active material containing scaly graphite particles and coated graphite particles. The coated graphite particles contain graphite particles and a coating layer coating the surfaces of the graphite particles. The coating layer contains amorphous carbon particles and an amorphous carbon layer. It is preferable that the negative electrode active material contain 1 to 6% by mass of the scaly graphite particles and that the graphite particles, the amorphous carbon particles, and the amorphous carbon layer be in a mass ratio of 100:?:? where 1???10, 1???10, and ??1.34?.
    Type: Application
    Filed: June 25, 2012
    Publication date: May 15, 2014
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Shinichi Yamami, Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20140080010
    Abstract: To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity and superior low temperature characteristics. The present invention is a non-aqueous electrolyte secondary battery including a positive electrode and a non-aqueous electrolyte containing a non-aqueous solvent, the non-aqueous electrolyte secondary battery characterized in that the non-aqueous solvent includes 30 to 70 vol % ethylene carbonate at 25° C. and 1 atm, the non-aqueous electrolyte includes a total of 0.01 to 0.10 mol/L lithium difluorophosphate and/or lithium monofluorophosphate, and the packing density of the positive electrode active material layer is from 2.0 to 2.8 g/ml.
    Type: Application
    Filed: July 16, 2013
    Publication date: March 20, 2014
    Inventors: Shingo Tode, Keisuke Minami, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20140045057
    Abstract: To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity. The present invention is a non-aqueous electrolyte secondary battery provided with an electrode assembly and a non-aqueous electrolyte including a non-aqueous solvent, the electrode assembly including a positive electrode and a negative electrode. In the positive electrode, a positive electrode active material layer is formed on a positive electrode core. In the non-aqueous electrolyte secondary battery, the non-aqueous solvent includes 30 to 70 vol % ethylene carbonate at 25° C. and 1 atm, the non-aqueous electrolyte includes lithium bis(oxalato)borate, and the packing density of the positive electrode active material layer is from 2.0 to 2.8 g/ml.
    Type: Application
    Filed: July 16, 2013
    Publication date: February 13, 2014
    Inventors: Shingo Tode, Keisuke Minami, Toyoki Fujihara, Toshiyuki Nohma
  • Publication number: 20140045012
    Abstract: To provide a non-aqueous electrolyte secondary battery having high capacity and superior safety and cycle characteristics. The present invention is a non-aqueous electrolyte secondary battery including an electrode assembly and a non-aqueous electrolyte, the electrode assembly having a positive electrode, a negative electrode and a separator separating the positive electrode and the negative electrode, the non-aqueous electrolyte secondary battery characterized in that the separator has a three-layer laminated structure, the melting point of the middle layer being lower than either of the two outer layers, and the non-aqueous electrolyte including lithium bis(oxalato)borate.
    Type: Application
    Filed: July 16, 2013
    Publication date: February 13, 2014
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Taiki Nonaka, Keisuke Minami, Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
  • Patent number: 8597834
    Abstract: A nonaqueous electrolyte secondary battery including a negative electrode containing a graphite material as the negative active material, a positive electrode containing lithium cobalt oxide as a main component of the positive active material and a nonaqueous electrolyte solution, the battery being characterized in that the lithium cobalt oxide contains a group IVA element selected from the group consisting of Ti, Zr and Hf and a group IIA element of the periodic table, the nonaqueous electrolyte solution contains 0.2-1.5% by weight of a sulfonyl-containing compound and preferably further contains 0.5-4% by weight of vinylene carbonate.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: December 3, 2013
    Assignees: Ube Industries Ltd., Sanyo Electric Co., Ltd.
    Inventors: Koji Abe, Kazuhiro Miyoshi, Yasufumi Takahashi, Hiroyuki Fujimoto, Akira Kinoshita, Shingo Tode, Ikuro Nakane, Shin Fujitani
  • Patent number: 8388703
    Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 5, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
  • Publication number: 20130017448
    Abstract: In a nonaqueous electrolyte secondary battery including a positive electrode (11) whose surface has a positive electrode mixture layer containing a mixture of a conductive carbon material and a positive electrode active material containing a lithium-containing transition metal composite oxide having a layer structure and represented by the general formula LiaNixM(1-x)O2 (where M represents one or more kinds of elements, and a and x satisfy the conditions 0<a?1.2 and 0.4?x?1, respectively), the proportion of carbon atoms relative to the total atoms on the surface of the positive electrode is made to be not less than 80%.
    Type: Application
    Filed: March 10, 2011
    Publication date: January 17, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Akihiro Suzuki, Fumiharu Niina, Shingo Tode, Toshikazu Yoshida, Yoshinori Kida
  • Patent number: 8343662
    Abstract: A nonaqueous electrolyte secondary battery in which a lithium transition metal complex oxide containing at least Ni and Mn as transition metals and having a layered structure is used as a positive active material, the lithium transition metal complex oxide containing at least Ni and Mn as transition metals and having a layered structure further containing zirconium.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: January 1, 2013
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Shingo Tode, Akira Kinoshita, Hiroyuki Fujimoto, Yasufumi Takahashi, Ikuro Nakane, Shin Fujitani
  • Publication number: 20120280172
    Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 8, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
  • Patent number: 8268485
    Abstract: A nonaqueous electrolyte secondary battery which has a positive electrode containing lithium cobalt oxide as a positive active material, a negative electrode containing a graphite material and a nonaqueous electrolyte solution containing ethylene carbonate as a solvent and which is charged with an end-of-charge voltage of at least 4.3 V. Characteristically, the battery uses, as the positive active material, lithium cobalt oxide obtained by firing a mixture of a lithium salt, tricobalt tetraoxide (Co3O4) and a zirconium compound and having particle surfaces onto which the zirconium compound adheres.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: September 18, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yasufumi Takahashi, Hiroyuki Fujimoto, Akira Kinoshita, Shingo Tode, Ikuro Nakane, Shin Fujitani